Shock-absorber.



"G. E. NEWELL.

SHOCK ABSORBER.

- APPLICATION FILED NOV. 19, 1912.

PWASG. y Patented Jly 8, 1913.

@House s;

a 4 j M e fnl UNITED' STATES GREENE E. NEWELL,

or HOUSTON, Terras,

SHOCK-Ansonsten,

To all whom z' 1f 'muy concern lle it known that l, (ionamin E. Nrnvnmi, a citizen ot the United States, residingatI ll'louston, in the county ot' Harris and State of Texas, havel invented new and useful Improvelnents in Shoclr.- Absorbers, ot which the. following is a specitieat-ion.

rlhis invention relates to shock absorbers tor use upon automobiles and other vehicles, in which springs are employed between the axle and the body of the vehicle, the object in view being' to provide a device of the class ret'erred to adapted 'for use in conjuno tion with the ordinary springs to prevent ex,- ccssivc ope ation ofthe springs, both in the downward and upv 'ard thrust otthe body ot the machine, also avoiding to a large extent the .liability of the spring-s being,r fractured by sudden impacts met with on rough roads.

Vith` the above and other objects in view, the invention consists in thev construct-ion, combination and arrangement of parts, as will be hereinafter more fully described, illustrated in the accompanying drawings, and. pointed ont in the claim hereunto ap pended. l

Tnthe drawings: Figure 1 is a side elevation, showingthe shock absorber applied to an automobile. Fig. 2 is a vertical diametrieal section through the shock absorber on an enlarged scale.. Fig. l isa bottoni plan view of the cylinder.

The shock absorber contemplated in this invention comprises a cylinder l, a piston i8, and a piston rod 3. 'l`hc piston 2 is importorate land is designed to tit closely to the inner peripheral wall otl the cylinder, so as to prevent the air from passing' around the peripheral edge of the piston. 'lhc rod il is connected rigidly to the piston and extends` through the head Lt o'l the cylinder, the opposite head 5 being inipert'orate.

ln carryingr out the present invention, the peripheral wall t5 otl the cylinder is provided with a circular series ot elongated vents 7 in the 'l'orui ot' slots which are substai'itially diau1ond-shapcd. ln other words. each ot' the slots is widest at its center` which corre- Isponds approximately with the center ol' thc cylinder `b`et\\'een` the heads -sl and 5 Specification of ietters Fatent.

Application filed November 19, 1912.

Patented duty tl, ttfltll.

serial No. 732.313.

thereof` said slots tapering in both directions and terminating in acute angles 8, `which are located a suitable distai ce trom the adjacent heads l and 5, so that when the piston ap1'n'oaehes close to either head oi the cylinder, an air cushion will be established between the piston and such head ot the cylinder, which will etl'ectually check the further operation ot the device.

It will be observed t'roin the foregoing Wlescription, ta ltcn in connection with the at companying drawings, that in its interniediate orrccntral position, the, piston has verv little, influence over the springs oil the ma chine, which are thereby allowed to act with comparative freedom. However, the ton approaches either the head et. or the head 5 ot. the cylindei.,the vent slots are grada ally cut ott1 or closed, and this gives ay grad-- nallchecl: to the movement of the piston, and consequently to the springs ot the vehi cle,vit being understood that the cylinder isA connected to the body ot the vehicle, vv'hil the piston rod is connected to one of the axles, or vice versa.

The construction above described does away with all adjustable resistance or check valves. the` slots 7 performing' the function of such valves and giving: a gradual increase in the resistance to the movements ot the piston hack and toi-th in the cylinder.

that is claimed is:

A pneumatic shock absorber tor vehicles comprising an air` cylinder closed at both ends` an impertorate piston mounted to reciprocate therein, and ay piston rod passing through due end ot the cylinder, the evlin-lder having its` circular wall perforated hy au annular series ot narrow diamond shaped rent slots open to the atmosplnre` said slots being" widest at the center and tapering1 therefrom toward the opposite ends ot thc cjtlinder and terminating ata distance trom the ends oli the cylinder.

ln testimony whcreot I atlix my signature iu presence ot two witnesses.

(llt lCllNlC ll. Nlllfllllil'i.

Vivitnesses:

h. Tl'. .lacusom (l. J. llannis. 

